Home / 21,806.62-30,096.36-13,313.63

Finding the Fourth Proportional to 21,806.62, 30,096.36 and 13,313.63

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Solution

The fourth proportional to 21,806.62, 30,096.36 and 13,313.63 is: 18,374.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,806.62 : 30,096.36 = 13,313.63 : x
  2. Step 2: Convert to fraction form
    21,806.62/30,096.36 = 13,313.63/x
  3. Step 3: Cross multiply
    21,806.62x = 30,096.36 × 13,313.63
  4. Step 4: Simplify right side
    21,806.62x = 400,691,876.63
  5. Step 5: Solve for x
    x = 400,691,876.63/21,806.62
  6. Step 6: Final answer
    x = 18,374.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.